Though they evolved separately over millions of years in different worlds of darkness, bats and toothed whales use surprisingly similar acoustic behavior to locate, track, and capture prey using echolocation, the biological equivalent of sonar.
Every second, lightning flashes some 50 times on Earth. Together these discharges coalesce and get stronger, creating electromagnetic waves circling around Earth, to create a beating pulse between the ground and the lower ionosphere, about 60 miles up in the atmosphere.
Brain networks may avoid traffic jams at their busiest intersections by communicating on different frequencies, researchers at Washington University School of Medicine in St. Louis, the University Medical Center at Hamburg-Eppendorf and the University of Tübingen have learned.
Evidence of ancient water at a Martian crater is the latest in a long series of discoveries by a surprisingly long-lived Mars Exploration Rover Opportunity, according to a paper published in the May 4 edition of the journal Science entitled, “Ancient Impact and Aqueous Processes at Endeavour Crater, Mars.â€